Device for illustrating the principles of music



(Model.)

` G. W. DIBERT. v, l DEVICE POR ILLUSTRATING THE-PB NCIPLES 0F MUSIC. No. 303,500. Patented Aug. 12,1884.

WITNESSES= NVENTQR.

N. Pneus. Phmumugmpner. whingenn. n. c.

IINTTED STaTns PATTTNT @Trice GEORGE V. DIBERT, OF IMLERTOVN, PENNSYLVANIA.

DEVICE FOR ILLUSTRATING THE PRINCIPLES OF MUSIC.

.SPECIFICATION fol-ming part of Letters Patent No.

I Application iiled August 2Q, 151,53

To all whom '1125 may concern:

Be it known that I, GEORGE XV. DIBERT, a resident of Imlertown, in the county of Bedford and State oi`Pennsylvania,have invented a certain new and useful Device for Illustrati ng the Principles of Music; and I hereby declare that the following is a full, clear, and exact description of the same, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, which forms a part of this specication.

My invention has relation to that class of apparatus for teaching music, in which a plate or table has signs and ligures relating to the science of musicinscribed in a circle and hav ing a disk concentric with the said circle pivoted within the same, the disk having signs and figures inscribed upon it, which may be brought to register with the iigures upon the circle of the table by revolving the disk,form ing signs and iigures for the different musical combinations; and it consists in the improved construction and combination of the parts of such an apparatus, as hereinafter more fully described and claimed.

In the accompanying drawing, which represents a view of t-heplate or table with its revolving disk and which plate or table may be made of any material desired `and mounted in any desired manner, the letter Aindicates the table, and B the disk, which is pivoted at its center to turn in the plane of the table. A ring or band, G,'is marked upon the table around the periphery of the disk, and a number of larger marks, I), are inscribed near the outer edge of the same, representing the diatonic scale in the round-note system, the intervals between each mark corresponding to the intervals between the notes, and two octaves being preferably inscribed around the ring. Inside these marks are marked names of the notes after the well-known notation solmization, and inside these names are inscribed marks E of different shapes, representing the characters of the seven-character system, and the round-note marks, which in playing the scale upon the piano are intended to be struck by the thumb are marked black, while the other marks are simply in outline. At their proper places between the marks or characters of the diatonic scale are marked 303,500, dated August 12, 1884-.

(Modem smaller characters, l?, ind i eating the semi-ton es, thus producing the entire chromatic scale when starting from fdo77 as representing C in the scale.' In the spaces between the marks upon the lower portion ot' the band are inscribed several forms of chords representing modulations and inversions of the original chord, the notes ofthe scale being denominated by numbers from l to S, and above the band are inscribed the characters for the several values of notes and rests, and the several signs used in music. The revolving disk has three rings or bands, G, at its edge, in which the letters indicating the notes are inscribed, the notes which represent the white keys upon the piano-forte being indicated by white letters. and theletters indicating the notes represented by black keys upon the piano being indicated by black letters, all of which letters are at equal distances, the letters in the three bands indicating enharmonically the letters of the notesof the scale, and the space inside the bands has inscribed upon it the fifteen scales as written in the staff, the lines of which are radial, the several chords, inversions, resolutions, and abbreviations of chords, and the lines and spaces in the F and G clefs.

In using the apparatus the disk may be turned until the key-note of the scale which it is desired to analyze registers with do or l in the band around the edge of the disk, when by following the diatonic scale upon the said outer ring, the notes upon the ring ofthe disk which register with the notes upon the outer ring will be the notes of that scale. The positions of the notes of that scale on the staff, as well as the several inversions, Ste., will be found in the space inside the rings or bands upon the revolving disk, registering with the key-note of the scale. In this manner it will be seen that a person may analyze the several scales and be enabled to read all chords, inversions, resolutions, and abbreviations belonging to the several keys by simply bringing the key-note of the scale to register with do7 upon the outside ring, or for a minor key with its minor third la .7?

Having thus described my invention, I elai 1n and desire to secure by Letters Patent of the United Statesn Y g l. In an apparatus for teaching music, the combination of a table having a circular band IOO marked upon it, having` the notes of" the diatonic scale inscribed by dill'erent large marks iu the sol-.Va system, with the intervals between the elunaetei's eorrespoinling to the intervals between the notes o1" the seale,and heving` the semi-tones inscribed by snialler marks between the larger notes at their appropriate places7 with a disk pivoted to revolve within and eoneentrie with the bund7 and having the inusieal alphabet inscribed upon its edge in three eoneentrie circles indicating` the .letters ol' the notes enliarnionicully, the .letters being marked at equal distances7 as and Vfor the purpose shown and set forth.

2. In an uiipz'iratus i'or teaching inusie, the combination ol" a table havinv a eireulzii.' band niarkod upon it7 having the notes oi" the seule inthe tonie soll'a system andthe sen1i-tones inscribed upon it by dil'l'erent Characters in dii'l'erent systems7 all, however, belonging to (he tonie sella s ysteni and at equal distances, the intervals between the notes or ehnraei'ers o` the several notes erin-respmnling to the intervals between the notes in the seule, with a eireular disk pivoied eonei'ui'rieaily with and within the said band having|` the musical alphabet inseribed upon its edge enharnionically, thelettersbeine' marked at equal distances and having` the several scales inscribed upon the stati', the lilies of the saine running radially l'roin the center ol` the disk at the letters indicui infT the notes correspondingto the scale, as und l`or the purpose shown and set l'orth.

i i i l i ,f l E i f il i 3. As an improvement in apparatus .l'or teaching` innsie, a plate or table haring;r a eirenlar band inarked upon it, havinlV 'the not s ofthe scale in the tonie solia system and the semi-tones inscri bed upon it by dii'l'ercntcharacters in differentsub-systems to the toniesoli'a system7 the characters being at equal distanees, and the interif'als bijftwecn ihe several eharaeters of the notes eorresl'ionding to thi-` intervals between the notes in the seule, und having the several fornis of chords represent ing modulations andinversions oi" the original ehord inscribed in the spaees between the ehziraeters upon the lower portion of' the bund by numbers i'roin l to 8, and a eireularrevolving plate pivoted concentric with and within the band, .havingI the inusieal zrlifihalie inseribed upon its edge :it orpi-al distances nnd in eonemitrie rows1 and having the severnlsrnles inseribed upon the stall', the lines of' the suine radiating l'roin the center ol' the disk at points eorreslnnidine to the letters on the edge indieatingY the tonie notes of' the scales, and show ing the several Chords, their inversions, resolutions, and alibreviutions, ns shown and de seribed.

(i IIORG Irl W, DI Vii IG RT. 

